<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avater_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登陆表单区 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="el-icon-s-custom"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="el-icon-unlock"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //登陆表单数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      //表单验证规则
      loginFormRules: {
        //用户名规则
        username: [
          { requied: true, message: '请输入用户名', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在2-10个字符之间', trigger: 'blur' },
        ],
        //密码规则
        password: [
          { requied: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在6-16个字符之间', trigger: 'blur' },
        ],
      },
    }
  },
  methods: {
    //重置按钮
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: result } = await this.$http.post('login', this.loginForm)
        if (result.meta.status !== 200) {
          return this.$message.error('登陆失败')
        } else {
          this.$message.success('登陆成功')
          //将token保存在客户端的sessionStorage中
          window.sessionStorage.setItem('token', result.data.token)
          //跳转页面
          this.$router.push('/home')
        }
      })
    },
  },
}
</script>

<style  scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  position: absolute;
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avater_box {
  position: absolute;
  height: 130px;
  width: 130px;
  border: 1px solid #eeeeee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #dddddd;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
}
.avater_box img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>